Overview
Introduction
Knowing your og:title and og:image tags are technically present isn't the same as knowing how the resulting share card actually looks, a title can validate fine and still get truncated awkwardly, or an image URL can resolve but crop badly once rendered inside a real card layout.
This tool closes that gap: fetch or paste a real page, and it extracts the page's actual Open Graph tags and renders them as visual card mockups, so you see the real result instead of just a pass/fail checklist.
What Is Open Graph Preview Tool?
A tool that reads a real page's og:title, og:description, og:image, og:url, and og:site_name tags, fetched live or pasted as HTML, and renders them as share-card mockups across a few platform styles.
It reuses the same tag-extraction logic as Open Graph Checker and the same card-layout logic as Social Share Preview, so the preview matches what those two tools already model, just driven by real extracted data instead of a validation checklist or hand-typed fields.
How Open Graph Preview Tool Works
The page's HTML (fetched directly, or pasted when fetching is blocked by CORS) is parsed with the browser's DOMParser, and every og:* meta tag is collected the same way Open Graph Checker does it.
The extracted title, description, image, and URL are then run through the same per-platform truncation limits and domain-extraction logic Social Share Preview uses, and rendered into that platform's card layout.
When To Use Open Graph Preview Tool
Right before sharing a page for the first time, to see the actual resulting card rather than trusting the tags look right in the source.
When a page's tags pass a checker's validation but the share card still looks off in practice, to see exactly how the current title/description/image combination renders.
Often used alongside Open Graph Checker and Social Share Preview.
Features
Advantages
- Shows the real rendered result from a page's actual tags instead of requiring you to retype title/description/image by hand.
- Works on any page via the paste-source fallback, not just pages with permissive CORS.
- Renders multiple platform styles at once from the same extracted data, so you can compare layouts in one view.
Limitations
- This is a CSS mockup approximating each platform's typical layout, not a live screenshot or that platform's actual rendering engine.
- A live fetch only works when the target sends permissive CORS headers, which most ordinary websites don't; use the paste fallback for anything else.
- Requires an og:title tag to render a preview; a page with no Open Graph tags at all has nothing for this tool to show.
Examples
Best Practices & Notes
Best Practices
- Check the preview after any og:title or og:description edit, not just once at launch, since even small copy changes can shift where a platform's truncation cuts in.
- If the image doesn't render, confirm the og:image URL is absolute (starts with http:// or https://) and publicly reachable, the same requirement Open Graph Checker flags.
Developer Notes
extractOgPreviewData requires og:title specifically because every card layout treats it as the anchor field; og:description, og:image, og:url, and og:site_name are all optional and render as empty/placeholder values when absent, mirroring how a real platform would degrade gracefully.
Open Graph Preview Tool Use Cases
- Previewing a real page's share card right before publishing or sharing a link
- Debugging why a page's actual share card looks different from what was expected, using its real tags instead of retyped ones
- Comparing how the same live page's tags render across a few different platform card styles
Common Mistakes
- Assuming a page with valid-looking meta tags in the source will automatically look good once rendered, without actually previewing the card.
- Forgetting that a relative og:image path resolves fine in a browser tab but fails to load here (and for real crawlers), the same pitfall Open Graph Checker warns about.
Tips
- If fetching fails, use your browser's "View Page Source" (not DevTools' rendered Elements panel, which can include client-side changes) to get the exact HTML a crawler would see, then paste that in.